| OEM | OEM Services Provided |
| Feature | Good stability |
| Classification | Chemicals |
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Cationic Surfactants are surface-active agents characterized by:
Hydrophilic Head: Positively charged (e.g., quaternary ammonium, pyridinium)Hydrophobic Tail: Alkyl (C8–C22) or aromatic chainsKey Feature:
Cationic charge → Strong affinity for negatively charged surfaces (e.g., hair, fabrics, bacteria)| Class | Structure | Example Compounds |
|---|---|---|
| Quaternary Ammonium (Quats) | R₄N⁺X⁻ (X = Cl⁻, Br⁻) | Cetrimonium chloride (CTAC) |
| Esterquats | R-COO-CH₂-CH₂-N⁺(CH₃)₃ X⁻ | Esterquat 1 (biodegradable variant) |
| Pyridinium Salts | R-N⁺-C₅H₅ X⁻ | Cetylpyridinium chloride (CPC) |
| Imidazolium Salts | R-N⁺-C₃H₃N₂ X⁻ | Didecyldimethylammonium chloride (DDAC) |
| Property | Advantage | Test Method |
|---|---|---|
| Antimicrobial | Effective against bacteria/viruses | ISO 20743 (antibacterial efficacy) |
| Fabric Softening | Reduces static cling in textiles | AATCC 124 (softness evaluation) |
| Surface Modification | Binds to negatively charged substrates | Zeta potential measurement |
| Emulsification | Stabilizes oil-in-water systems | HLB system (Griffin method) |
| Industry | Function | Example Use |
|---|---|---|
| Personal Care | Hair conditioners, antiseptic soaps | Behentrimonium chloride in shampoos |
| Textiles | Fabric softeners, antistatic agents | Distearyldimonium chloride |
| Healthcare | Disinfectants, surgical scrubs | Benzalkonium chloride (BAC) |
| Agriculture | Adjuvants for herbicides | Quaternary ammonium compounds |
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